96 
BRITISH FRESHWATER RHIZOPODA. 
1. Vampyrella lateritia (Fresen.) Leidy. 
(Plate X; Pl. XI, figs. 1-3.) 
Ameubu lateritia Fresentus in Abh. Senckenb. nat. Ges. II 
(1856), p. 218, t. x, ff. 13-19. 
Vampyrella spirogyre Crexkowsxt in Jahrb. wiss. Bot. III 
(1863), p. 428, and in Arch. f. mikr. Anat. I (1865), 
p. 218, tt. xii—xii, ff. 44-56; Hacxen in Jen. Zeits. f. 
Med. u. Nat. TV (1868), p. 188, and Biol. Stud. XII 
(1870), p. 72; Herrwicg and Lesser in Arch. f. mikr. 
Anat. X (1874), Suppl. p. 61, t. ui, f. 2; Artman in 
Journ. Linn. Soc., Zool. XIII (1877), p. 419, f. 11; 
ArcHer in Q. J. Micr. Sci. XVII, ns. (1877), p. 347; 
Mager in Rend. R. Ist. Lomb. (2) X (1877), p. 367, and 
in Boll. Scient. ITI, an. 10 (1888), p. 105; Bivscuu in 
Bronn’s Thier-Reichs, I, 6 (1880), t. xu, f. 11; Kier in 
‘Bot. Zeit. XL (1882), col. 214, and in Bot. Centralbl. XI 
(1882), p. 256; Lanzssan Traité Zool., Prot. (1882), p. 28, 
ff. 10-13; Ray Lanxester in Encycl. Brit. ed. 9, XIX 
(1885), p. 839, f. 1, 5-7; Zorr Pilzthiere oder Schleimp. 
(1885), p. 104, £. 10, i-iii, f. 11, ili, iv, f.37 z-¢; Danezarp 
in Ann. Sci. Nat., Bot. (7) VI (1886), pp. 252, 254; 
Biner Vie psych. in Psych. expér. (1888, 1891), p. 235, 
and (Engl. transl.) Psych. Life (1889), p. 114; Prnarp in 
Arch. Sci. Phys. XXII (1889), p. 528, and in Mém. Soc. 
Phys. Genéve, XX XI, no. 2 (1890), p. 119, t. i, ff. 1-16. 
Vampyrella lateritia Lyumy Freshw. Rhiz. N. Amer. (1879), 
p. 253, t. xlv, ff. 10-16; S[ewarp] in Amer. Journ. Micr. 
V (1880), p. 105, ff.; Hrrcucock Synops. Freshw. 
Rhiz. (1881), p. 46; Brocumann Mikr. Thierw. Siisswass, 
(1886), p. 19, t. ii, f. 42, and ed. 2 (1895), p. 22, t. ii, 
f. 35; WurreLeces in Proc. Linn. Soc. N. 8. Wales, (2) I 
(1886), p. 503; Perry in Proc. Amer. Soc. Micr. XII 
(1891), p. 95; Casu in Trans. Manch. Micr. Soc. 1891 
(1892), p. 53, t. u, ff. 22, 23; Lorp in Trans. Manch. 
Mier. Soc. 1891 (1892), p. 57; Crawiny in Amer. Nat. 
XXXIV (1900), p. 255, ff.; G. S. West in Journ. Linn. 
Soc., Zool. XXVIII (1901), p. 383, t. xxix, ff. 29-81, and 
op, eft, XXTX (1908), pp. 109, 112. 
Body ordinarily spherical, but susceptible of varia- 
tion; in the active state appearing as a reddish 
actinophrys-like form, displaying numerous straight 
